Ok no worries, the main thing is i know what issue areas are.
Just a quick note.
One of the folders had + in so i renamed (as the folder will obviously be part of the file path and seemed to be causing issues), cleared all the cache files - folders and files.
As they reloaded i noticed there were quite a few folder click errors and images that hadn't loaded, re traversing folders seemed to 'clear' the errors and more images were showing - after several backwards and forwards it reached a state were most were working and images showing bar known # issues etc.
It seems there isn't enough time for the scripts to do their job (build the caches i am guessing).
Is there anyway of slowing down the initial cache building process so its built 100% first time?
I think its better users wait a little bit on first load and get complete set of working folders and images?
My thumb generator script does this - slow first page load while it build thumbs - fast refresh or next load.
In most occasions the person first loading new objects will check these out first which will have the slight delay while first viewers will get the speedier cached results.
Neil